I think that if the artist role involves only drawing pictures, then yes, the Artist role may need to be replaced; if there are other mediums (writing/poetry, music, video {not likely}, or even photography), then the playing field will probably be more even depending on what 'role' the artist can fill. Some members are hardcore artists and illustration gods who can design anything from scratch, so as long as the requirements aren't insane (i.e. - everyone needs to draw a banner using whatever tools they have at their disposal, go), then I personally believe the Artist Role can still 'fit in' somehow.
Sorry for the late response. Didn't see this early enough since I was at PRIDE during the week this was posted.